US Patent 7989389 Heat-sensitive recording material
Patent 7989389 was granted and assigned to RICOH COMPANY,LTD. on August, 2011 by the United States Patent and Trademark Office.
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Patent abstract
The present invention provides a heat-sensitive recording material having a support, a heat-sensitive color-developing layer containing a leuco dye and a developer, and a protective layer, the heat-sensitive color-developing layer and the protective layer being formed on the support, wherein carboxylic-acid-modified polyvinyl alcohol with a weight average degree of polymerization of 100 to 400 and a modification degree of 0.2 mol % to 1.0 mol % is used as a dispersing agent for dispersing the leuco dye.
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Patent Inventor Names
Kazuyuki Uetake0
Kunihiko Hada0
Michiyo Fukushima0
Yoshikazu Kaneko0
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US Patent 07989389 Heat-sensitive recording material US Patent 7989389 Heat-sensitive recording material
Infobox
Patent Number
079893890
Patent Number
79893890
Edits on 24 Sep, 2022
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Infobox
Is a
Current Assignee
0
Patent Jurisdiction
Patent Number
079893890
Date of Patent
August 2, 2011
0Patent Application Number
120468410
Date Filed
March 12, 2008
0Patent Primary Examiner
Edits on 8 Dec, 2021
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Infobox (+8 properties)
US Patent 07989389 Heat-sensitive recording material
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07989389
Date of patent
August 2, 2011
Patent application number
12046841
Date Filed
March 12, 2008
Patent primary examiner
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